Remove upstreamed pattern (#171)

Author: Hardcode84

mlir/lib/dialect/plier_util/dialect.cpp

@@ -185,56 +185,13 @@ struct FillExtractSlice
     return mlir::success();
   }
 };
-
-struct ReinterpretOfReinterpret
-    : public mlir::OpRewritePattern<mlir::memref::ReinterpretCastOp> {
-  using OpRewritePattern::OpRewritePattern;
-
-  mlir::LogicalResult
-  matchAndRewrite(mlir::memref::ReinterpretCastOp op,
-                  mlir::PatternRewriter &rewriter) const override {
-    mlir::OpFoldResult zero = rewriter.getI64IntegerAttr(0);
-    auto getCastSrc = [&](mlir::Value src) -> mlir::Value {
-      if (auto prev = src.getDefiningOp<mlir::memref::ReinterpretCastOp>()) {
-        return prev.source();
-      } else if (auto prev = src.getDefiningOp<mlir::memref::CastOp>()) {
-        return prev.source();
-      } else if (auto prev = src.getDefiningOp<mlir::memref::SubViewOp>()) {
-        if (llvm::all_of(prev.getMixedOffsets(),
-                         [&](auto val) { return val == zero; }))
-          return prev.source();
-      }
-
-      return nullptr;
-    };
-
-    mlir::Value src = op.source();
-    while (auto prev = getCastSrc(src))
-      src = prev;
-
-    if (src == op.source())
-      return mlir::failure();
-
-    auto offsets = op.getMixedOffsets();
-    if (offsets.size() != 1)
-      return mlir::failure();
-
-    auto sizes = op.getMixedSizes();
-    auto strides = op.getMixedStrides();
-
-    rewriter.replaceOpWithNewOp<mlir::memref::ReinterpretCastOp>(
-        op, op.getType(), src, offsets.front(), sizes, strides);
-    return mlir::success();
-  }
-};
 } // namespace
 
 void PlierUtilDialect::getCanonicalizationPatterns(
     mlir::RewritePatternSet &results) const {
   results.add<DimExpandShape<mlir::tensor::DimOp, mlir::tensor::ExpandShapeOp>,
               DimExpandShape<mlir::memref::DimOp, mlir::memref::ExpandShapeOp>,
-              DimInsertSlice, FillExtractSlice, ReinterpretOfReinterpret>(
-      getContext());
+              DimInsertSlice, FillExtractSlice>(getContext());
 }
 
 OpaqueType OpaqueType::get(mlir::MLIRContext *context) {